Antenna base



FIG. 1 is a perspective view of an antenna base showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a side elevational view thereof;

FIG. 7 is a perspective view of a second embodiment thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a top plan view thereof;

FIG. 10 is a front elevational view thereof;

FIG. 11 is a rear elevational view thereof; and,

FIG. 12 is a side elevational view thereof. 

The ornamental design for an antenna base, as shown and described. 